Is it normal for a carbon monoxide detector to read 0 ppm?

carbon monoxide detector reads 0 image

dfjkdfj

I got a carbon monoxide detector, which reads 0 ppm. It has a feature that allows you to check the highest level within the past 24 hours, which also is 0 ppm. Is this normal? I thought there might be one or two ppm in the house.

Answer
It can read it. But f you want to know if it is working then it will either need to be calibrated by a professional (cheaper to buy a new one), or quick gut check take it to the hood of an 80% gas HW heater. It should give you some reading and I usually see above 9 when around a water heater.

Is it normal for a carbon monoxide detector to read 0 ppm?

dfjkdfj

Sorry for posting a second time, but the first question did not get any good answers. Is it normal for a carbon monoxide detector to read 0 PPM? I have one that shows the highest level over the past 24 hours, and whenever I check it always reads 0 PPM. Is this normal? I would think there might be one or two PPM in the house, considering the lowest level it would bother sensitive people is 30 PPM.

Answer
Actually in the 0 to 29 ppm level CO detectors are not allowed to display the actual CO level, and are required to display zero in that range according to CO alarm standards developed by Underwriters Laboratories (UL2034) in collaboration with the US Consumer Product Safety Commission. (The display and alarm specifications of UL2034 are matched in a Canadian standard, CSA 6.19-01)

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